[Mailman-Users] New user - SMTP failure

[Jim Ohlstein]

Hello,

I am trying to set up a new system for a new list but finding that 
outgoing mail is failing.

The setup I have is FreeBSD 10.3 in a jail with localhost at 
10.0.250.37. I have confirmed that routing in and out of the jail are 
correct by sending mail from it via command line, via telnet, and by 
posting to a newly created list. Unfortunately those messages are not 
relayed out, nor are list invitations.

The system is Mailman 2.1.21, Postfix 3.1.0, and Python 2.7.11.

I see this in logs/smtp-failure:

Apr 20 23:07:27 2016 (19197) Low level smtp error: [Errno 61] Connection 
refused, msgid: <mailman.0.1461205537.18941.c2-list at lists.my.domain>
Apr 20 23:07:27 2016 (19197) delivery to my at email.address failed with 
code -1: [Errno 61] Connection refused
Apr 20 23:07:27 2016 (19197) Low level smtp error: [Errno 61] Connection 
refused, msgid: <mailman.0.1461205853.19010.c2-list at lists.my.domain>
Apr 20 23:07:27 2016 (19197) delivery to my at email.address ailed with 
code -1: [Errno 61] Connection refused
Apr 20 23:07:27 2016 (19197) Low level smtp error: [Errno 61] Connection 
refused, msgid: <mailman.0.1461206277.19201.c2-list at lists.my.domain>
Apr 20 23:07:27 2016 (19197) delivery to my at email.address failed with 
code -1: [Errno 61] Connection refused
Apr 20 23:07:27 2016 (19197) Low level smtp error: [Errno 61] Connection 
refused, msgid: <mailman.0.1461207076.19195.mailman at lists.my.domain>
Apr 20 23:07:27 2016 (19197) delivery to my at email.address failed with 
code -1: [Errno 61] Connection refused

Nothing shows up in Postfix logs for these refused connections.

And lots of lines that look like this in logs/post:
Apr 20 23:07:26 2016 (19197) post to c2-list from 
c2-list-bounces at lists.my.domain, size=583, 
message-id=<mailman.0.1461205085.18509.c2-list at lists.my.domain>, 1 failures


Scanning Google I saw issues where there were errors in /etc/hosts. That 
file is world-readable and there is a correct entry for localhost. I 
have also confirmed that Postfix is listening on 25 on localhost using 
telnet and sockstat:

# telnet localhost 25
Trying 10.0.250.37...
Connected to localhost.
Escape character is '^]'.
220 lists.my.domain ESMTP Postfix

The above works for root and for a non-root user.

# sockstat | grep 25
postfix  smtpd      19679 6  tcp4   10.0.250.37:25        *:*
root     master     19170 13 tcp4   10.0.250.37:25        *:*

I'm at a loss as to where to look next. Thanks for any input.


-- 
Jim Ohlstein


"Never argue with a fool, onlookers may not be able to tell the 
difference." - Mark Twain